TPS65141
- 2.7-V to 5.8-V Input Voltage Range
- 1.6-MHz Fixed Switching Frequency
- 3 Independent Adjustable Outputs
- Main Output up to 15 V With <1% Typical Output
Voltage Accuracy - Virtual Synchronous Converter Technology
- Negative Regulated Charge Pump Driver VO2
- Positive Charge Pump Converter VO3
- Auxiliary 3.3-V Linear Regulator Controller
- Internal Soft Start
- Internal Power-On Sequencing
- Fault Detection of All Outputs (TPS65140 and
TPS65145) - No Fault Detection (TPS65141)
- Thermal Shutdown
- System Power Good
- Available in 24-Pin HTSSOP and 24-Pin VQFN
PowerPAD™ Packages
The TPS6514x series offers a compact and small power supply solution to provide all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only.
The main output VO1 is a 1.6-MHz fixed frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65140 and TPS65141 has a typical switch current limit of 2.3 A and the TPS65145 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler or tripler provides the positive LCD gate drive voltage. An externally adjustable negative charge pump provides the negative gate drive voltage. Due to the high 1.6-MHz switching frequency of the charge pumps, inexpensive and small 220-nF capacitors can be used.
Additionally, the TPS6514x series has a system power good output to indicate when all supply rails are acceptable. For LCD panels powered by 5 V the device has a linear regulator controller using an external transistor to provide a regulated 3.3-V output for the digital circuits. For maximum safety, the TPS65140 and TPS65145 goes into shutdown as soon as one of the outputs is out of regulation. The device can be enabled again by toggling the input or the enable (EN) pin to GND. The TPS65141 does not enter shutdown when one of its outputs is below its power good threshold.
관심 가지실만한 유사 제품
기술 문서
유형 | 직함 | 날짜 | ||
---|---|---|---|---|
* | Data sheet | TPS6514x Triple Output LCD Supply With Linear Regulator and Power Good datasheet (Rev. F) | PDF | HTML | 2016/06/29 |
Application note | 스트컨버터의 전력계 기본 계산 (Rev. D) | PDF | HTML | 2022/11/21 | |
Application note | Understanding Undervoltage Lockout in Power Devices (Rev. A) | 2018/09/19 | ||
Application note | Basic calculation of an inverting buck-boost power stage (Rev. A) | 2017/08/28 | ||
Application note | How to Estimate the Output Voltage Range of the Charge Pumps in the TPS6510x | 2017/08/08 | ||
Application note | How to Compensate the TPS6510x and the TPS6514x | 2016/08/30 | ||
Application note | Generation of a VCOM buffer input using PWM signal | 2015/12/21 | ||
Application note | Minimizing Ringing at the Switch Node of a Boost Converter | 2006/09/15 |
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패키지 | 핀 | 다운로드 |
---|---|---|
HTSSOP (PWP) | 24 | 옵션 보기 |
VQFN (RGE) | 24 | 옵션 보기 |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치